Effect of P-Zn-La-Si-Al-N-Mg-Yb Oxides Additives on Sintering and Microwave Dielectric Behaviors of Nd(Co_1/2Ti_1/2)O₃ Ceramics

Abstract:

The microstructure and dielectric properties of the complex perovskite Nd(Co_l/2Ti_1/2)0₃ ceramics with 60P₂O₅-15ZnO-5La₂O₃-5Al₂O₃-5N₂O-5MgO-5Yb₂O₃ glass additions from 1-2 wt% were prepared with the conventional solid-state route have been investigated. The resultant microwave dielectric properties were analyzed based upon the densification, the X-ray diffraction patterns and the microstructures of the ceramics. Doping with 60P₂O₅-15ZnO-5La₂O₃-5Al₂O₃- 5N₂O-5MgO-5Yb₂O₃ glass (up to 2 wt%) can effectively promote the densification of Nd(Co_1/2Ti_1/2)O₃ ceramics at low sintering temperature. A distinct sintering temperature reduction (100-200°C) can be achieved by adding 60P₂O₅-15ZnO-5La₂O₃-5Al₂O₃-5N₂O-5MgO-5Yb₂O₃ glass to the Nd(Co_1/2Ti_1/2)O₃ ceramics. The correlation between the microstructures and the microwave dielectric properties was also examined. The Nd(Co_1/2Ti_1/2)O₃ ceramics with 60P2O₅-15ZnO-5La2O₃- 5Al2O₃-5N₂O-5MgO-5Yb2O₃ glass additions can find applications in microwave devices requiring low sintering temperature.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1189-1192
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1189
• Online since: June 2012
• Authors: Cheng Hsing Hsu, Yu Hsuan Chang, Hsi Wen Yang, Jenn Sen Lin, Chun Hung Lai, Hsin Han Tung
• Keywords: 60P-15Zn-5La-5Al-5N-5Mg-5Yb Glass Ceramics, Microwave Dielectric Properties, Nd(Co_1/2Ti_1/2)O₃ Ceramics

References

[1] S.Y. Cho, C.H. Kim, D.W. Kim, K.S. Hong, J.H. Kim, Dielectric properties of Ln(Mg1/2Ti1/2)O3 as substrates for high-Tc superconductor thin films, J. Mater. Res. Vol. 14 (1999), p.2484

DOI: 10.1557/jmr.1999.0333

[2] G. Harshe, A.S. Bhalla, L.E. Cross, Synthesis and Dielectric Properties of a Cubic Perovskite Material: La(Mg1/2Ti1/2)O3, Mater. Lett. Vol. 18 (1994), p.173

[3] S.Y. Cho, M.K. Seo, K.S. Hong, S.J. Park, I.T. Kim, Influence of ZnO evaporation on the microwave dielectric properties of La(ZnTi)O3, Mater. Res. Bull. Vol. 32 (1997), p.725

DOI: 10.1016/s0025-5408(97)00040-8

[4] C.F. Tseng, C.H. Hsu, C.L. Huang, W.R. Yang, Dielectric Characteristics of Nd(Zn1/2Ti1/2)O3 Ceramics at Microwave Frequencies, J. Am. Ceram. Soc. Vol. 89 (2006), p.1465

[5] C.F. Tseng, C.H. Hsu, C.L. Huang, Low Dielectric Loss Characteristics of Nd(Co1/2Ti1/2)O3 Ceramics at Microwave Frequencies, J. Am. Ceram. Soc. Vol. 90 (2007), p.1619

DOI: 10.1016/j.matlet.2004.08.005

[6] T. Kakada, S.F. Wang, Syoshikawa, S.T. Jang, R. E. Newnham, Effect of Glass Additions on BaO-TiO2-WO3 Microwave Ceramics, J. Am. Ceram. Soc. Vol. 77 (1994), p. (1909)

DOI: 10.1111/j.1151-2916.1994.tb07070.x

[7] T. Kakada, S.F. Wang, Syoshikawa, S.T. Jang, R.E. Newnham, Effect of Glass Additions on (Zr,Sn)TiO4 for Microwave Applications, J. Am. Ceram. Soc. Vol. 77 (1994), p.2485

DOI: 10.1111/j.1151-2916.1994.tb04629.x

[8] S.I. Hirno, T. Hayashi, A. Hattori, A. Chemical Processing and Microwave Characteristics of (Zr,Sn)TiO4 Microwave Dielectrics, J. Am. Ceram. Soc. Vol. 74 (1991), p.1320

DOI: 10.1002/chin.199138015

[9] V. Tolmer, G. Desqardin, Low-Temperature Sintering and Influence of the Process on the Dielectric Properties of Ba(Zn1/3Ta2/3)O3, J. Am. Ceram. Soc. Vol. 80 (1997), p. (1981)

DOI: 10.1111/j.1151-2916.1997.tb03081.x

[10] B.W. Hakki, P.D. Coleman, A Dielectric Resonator Method of Measuring Inductive Capacities in the Millimeter Range, IEEE Trans. Microwave Theory Tech. Vol. 8 (1960), p.402

DOI: 10.1109/tmtt.1960.1124749

[11] W.E. Courtney, Analysis and Evaluation of a Method of Measuring the Complex Permittivity and Permeability Microwave Insulators, IEEE Trans. Microwave Theory Tech. Vol. 18 (1970), p.476

DOI: 10.1109/tmtt.1970.1127271